Turn-table.



L. R. LEMOINE.

TURN TABLE.

APPLICATION FILED APR. 18. ms.

Patented Oct. 29, 1918.

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L. R. LEMOINE.

TURN TABLE.

APPILICATION mgu APR. 18. 1918.

1,282,885. Patented Oct. 29, 1918.

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LOUIS R. LEMOINE, PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO UNITED STATES CAST IRON PIPE & FOUNDRY COMPANY, OF BURLINGTON, NEW JERSEY, A. CORPO- RATION OF NEW JERSEY.

Application filed April 18, 1918.

To all whom it mag concern:

Be it known that I, LOUIS R. LnMorNn, a citizen of the United States, and a resident of the city and county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Turn-Tables, of which the following is a true and exact description, reference being had to the accompanying drawings, which for a part thereo My present invention relates to the .con- 1 struction of turntables, and particularly the turntables of pipe molding plants where relatively heavy loads are carried; at the periphery of the turntable. In a pipe molding turntable of the character referred to,

these heavy loads consist of the molding,

flasks supported either at the periphery or on Outriggers of the table located at a dis? the heavy flasks carried either at the periphcry or on the outriggers of the turntable.

The object of the present invention is to provide a simple and effective turntable construction, in which means are provided for resisting this tendency of the radial members of the turntable to tilt upward at the central portion of the turntable without requiring intricate construction and large, and

otherwise unnecessary amount of material needed to make the turntable itself stiff enough to reduce this tendency. I I

This I accomplish by utilizing the central column about which the table turns as a means for impressing a downwardly acting force on the inner ends of the radial turntable beams. In practicethis column is anchored at its base to the massive foundation beneath the turntable and a thrust bearing, preferably a ball or roller bearing, is interposed between this column and the turntable. Grdinarily this column supports crane arms, or other overhead parts, so that the weight of the column and the parts supported by it is ample to resist the upward dishing tend- Speciflcation of Letters Patent.

The radial beams inelfect e the turntable.

TURN -TABLE.

PatentedOct. 29, 1918.

Serial No. 229,263.

ency of the turntable. When the weight of the column, and parts supported by it, is in sufficient for this purpose, the dishing tendency is restrained in whole'or in part by the tension to which the lower portion of the column is then subjectedthrough its anchor connection to the foundation.

The. various features of novelty which characterize my invention are pointed out with particularity in the claims annexed to andforming a. part of this specification. For a better understanding of the invention, however, and the advantages possessed by it reference may be had to the accompanying drawings and, descr1pt1ve matter in WlllCh.

I have illustrated and described preferred embodiments of my invention.

Of the drawings:

Figure l is an elevation with parts broken away and in section of a portion of a pipe molding plant Fig. 2 is a sectional elevation of a portion of theturntable construction shown in Fig. 1 taken on a larger scale.

Fig. 3 is a plan view on a smaller scale of a portion of the turntable.

In the drawings, A represents the turntable proper, which turns about a central .post or column K, and is provided between its center and periphery with a curved rail A resting upon the tops of roller supports B running ona curved stationery track rail C surrounding the post K. The rolls B are journaled in the usual manner on the ends of radial shafts B, secured at their inner ends to a rin B The latter surrounds and is journalei l on a base member K forming a part of the lower'central step bearing I for The ring B and parts connected thereto revolve about theaxis of the post K with half the angular velocity of the turntable A when the latter isrotated. The

outer ends of the shafts B pass through the usual circular spacing rings B The turntable, as shown, is formed of deep radial trussed beam elements '1), comprising top and bottom girder members connected by suitable vertical and inclined members 1). The inner ends of the main girder elements of the trussed beams D are riveted to radial flanges H secured to a cylindrical body or casting H and forming the central or end portion of the turntable. The radial beams are framed into circular girders l) and adjacent radial beams D are connected by cross bars D Flask supporting radial beams E are secured between each adjacent pair of main radial beams D. The flasks F are shown as double vertical pipe mold flasks arranged at each side thereof at regular intervals around the periphery of the turntable, and are supported between the adj acent beams E and between each beam D and beams E. The central step bearing I, carried by the supporting member K is engaged by the lower end of the cylindrical body H.

A thrust bearing J comprising anti friction balls J is interposed between the upper end of the turntable central or hub member H, and a flange 01' abutment K carried by the column or post K. The latter is shown as connected at its upper end in the root truss members L of the building inclosing the turntable,'and isshown as carrying the inner ends of the angularly adjustable crane arms M and N, the outer ends of which are supported by the stationary track P carried by the truss members L. Thelower end of the post or column K is connected to the foundation in the construction shown by anchor bolts K With the construction described all, or the major portion, of the weight of the column K and the load carried thereby is transmit-r ted to the cylindrical central member H of the turntable through the thrust bearing J. The portion, if any, of this weight not balanced by the peripheral portion of the turntable, including the flasks F, is transmitted to the step bearing I. In case the central column K supports'no overhead parts, or the weightof the column and parts supported by it is insufficient, the anchor bolts K connecting the column K to the foundation for the turntable put the lower portion of the column under sutiicient tension to hold the center of the 'turntable against upward movement.

The described construction gives ample strength and rigidity with the use of much less material than would be required to give the turntable the necessary stiffness to resist its tendency to dish upward under the influence of the Weightsof the flasks F, than would be required if the column K was not used to hold down the'center of the turntable, and this advantage is obtained without any accompanying disadvantages.

While in accordance with the provisions of the statutes I have illustrated and describedthe best form of my invention now known to me, it will be apparent to those skilled in the art that'changes may be made in the form of my invention without departing from its spirit, and'that some features of my invention may sometimes be used to advantage withouta corresponding 'useof other features of the invention.

Having now described my invention, what I claim asnew and desire to secure by Letters Patent, is:

1. In a pipemolding plant the combination with a turntable and supporting means therefor comprising a central support on which the table is journaled and a'circular track surround ngsaid central support a series of flasks supported by said table at the outer side of said circular track and a thrust bearing between said support and said table opposing the tendency of the table to dish under the influence of the weight of the 2. In a pipe molding plant the combination of a turntable, a central support upon 1 which the table isjournaled, a circular supporting track surrounding said central support and uponwhich said tablebears, a series of flasks carried by said table beyond the said supporting track, a vertical post rising above said central support, overhead parts supported by said post abovethe table, and

a thrust bearing through which the weight series of flasks carried by said table beam members beyond the said supporting track a vertical post rising above said central support, and a thrust bearing between said post and tablethrough which the tendency of the inner ends of said beams to rise is opposed. 4:. In a pipe-molding plant the combination of a turntable comprising radial beam members, a central support upon which the table is journaled, a step bearing which resists downward movement of the center of the tablefa circular supporting track surrounding said central support,a series of flasks carried by said table beam members beyond the said supporting track, a vertical post rising above said central support, crane arms mounted on said post above the table, and" a thrust bearing through which the weightof said post and crane arms is transmitted to the inner ends of said beams.

LOUIS n LEMOINE.

Copies'of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, i i Washington, D. 0. 

